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Ultrapotent compound may help treat C. diff, reduce recurrence

Clostridioides difficile, or C. diff, is the leading cause of health care-associated infection in the U.S.

Only two antibiotics, vancomycin and fidaxomicin, are FDA approved for the treatment of C. diff, but even these therapies suffer from high treatment failure and recurrence.

Now, Purdue University innovators have advanced novel compounds they developed to help treat patients with C. diff, one of only four bacteria considered an urgent threat by the Centers for Disease Control and Prevention. Their work is published in the Journal of Medicinal Chemistry.

“Our compounds have several advantages, including ultrapotent activities with minimum inhibitory concentration values as low as 0.003 μg/mL,” said Herman O. Sintim, the Drug Discovery Professor of Chemistry in Purdue’s Department of Chemistry. “Our compounds also do not kill good bacteria at concentrations that kill C. diff and performed significantly better than current antibiotics in preventing recurrence. These are significant advantages for patients dealing with this difficult bacterial infection.”

The most promising of the Purdue compounds, containing trifluoromethylthio functional group, is HSGN-218. Sintim said it has been shown to be one of the most potent compounds ever produced for use against C. diff.

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  • Posted on September 25, 2020